XML 59 R60.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Liabilities:    
Long-term debt carrying value $ 20,956 $ 21,691
Long-term debt estimated fair value $ 17,990 $ 18,775